EP1026313A2 - Band for making a web material - Google Patents
Band for making a web material Download PDFInfo
- Publication number
- EP1026313A2 EP1026313A2 EP99123453A EP99123453A EP1026313A2 EP 1026313 A2 EP1026313 A2 EP 1026313A2 EP 99123453 A EP99123453 A EP 99123453A EP 99123453 A EP99123453 A EP 99123453A EP 1026313 A2 EP1026313 A2 EP 1026313A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- strength members
- fabric
- band according
- fourdrinier
- filling material
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F1/00—Wet end of machines for making continuous webs of paper
- D21F1/0027—Screen-cloths
-
- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D15/00—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
- D03D15/60—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the warp or weft elements other than yarns or threads
- D03D15/67—Metal wires
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F1/00—Wet end of machines for making continuous webs of paper
- D21F1/10—Wire-cloths
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S162/00—Paper making and fiber liberation
- Y10S162/901—Impermeable belts for extended nip press
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S162/00—Paper making and fiber liberation
- Y10S162/902—Woven fabric for papermaking drier section
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
- Y10T428/24777—Edge feature
Definitions
- the invention relates to a belt for machines for the production of material webs, especially paper webs.
- the tape is made of a composite material is produced, which is a preferably elongated strength members manufactured fabric includes, in which spaces between the reinforcements at least partially with a filler are filled.
- the tape Due to the connection of strength members and filler material can - compared to full metal strips - the weight of the invention Band can be reduced without losing stability and firmness of the tape. Furthermore, the tape is due to the invention Composite material much more flexible.
- the invention In principle, tape can be made in any width, which can also be more than 2 m. Another advantage is that the Manufacturing costs are lower than for strips made of full metal.
- the invention also makes it possible to change the proportion of the reinforcement the surface quality of the total surface and in particular the thermal conductivity of the tape and thus its Adjust heat transfer behavior in a targeted manner. Overall, the Invention thus an easy to use, inexpensive and versatile usable tape created.
- the composite material is at least essentially fluid impermeable.
- the tape according to the invention can be used as a sealing tape in dry areas e.g. used by paper machines. That the gaps Filling material in the fabric prevents moisture from the material or paper web to be dried, which is replaced by a Drying room, e.g. from the heated area a drying cylinder and the band according to the invention is limited, is passed through, can escape into the environment in an uncontrolled manner.
- bead-like thickenings are provided in the edge regions, which are preferred are formed by the reinforcement of the fabric.
- the band according to the invention is provided with integrated sealing beads, which are also formed in the manufacture of the fabric can.
- the sealing beads which can be made of metal or plastic, seal together with the heated surface and that between the sealing beads lying area of the belt the above-mentioned drying area for the material web to be dried compared to the environment from. Separate seals are therefore not necessary according to the invention.
- the reinforcements are interwoven.
- the fabric formed here can be comparatively simply manufactured and targeted and reproducible with each desired properties.
- the object on which the invention is based is also achieved by the features of the independent process claim and in particular by the fact that from preferably elongated strength members, in particular metal threads, a fabric is made and Gaps between the strength members at least partially a filling material, especially with plastic.
- the fabric is immersed in liquid filling material.
- the fabric is soaked with the filling material, so to speak which makes the gaps particularly easy and fast Way to be filled and the fluid tightness of the strength members and the filling material hardened in the final state Composite material can be produced.
- the fabric After immersing in the filling material, excess material, that covers the surfaces of the fabric, is smeared, to expose the reinforcement that forms the respective surface.
- the fabric can be treated in such a way that the reinforcement and the filling material located between the reinforcements form at least approximately smooth surfaces.
- the band 10 according to the invention shown in the figure comprises a flat Metal mesh made of interwoven metal threads 12, 14, 16 as reinforcement, which is preferably made of stainless steel or bronze are. Basically, according to the invention can also be made from different Metals existing threads are processed into a tape.
- the cross-sectional shape of the strength members can in principle be arbitrary be chosen, the cross section over the length of the reinforcement can be both constant and vary.
- the strength members indicate e.g. an approximately circular cross-section, but can also for example, be strip or ribbon-shaped and e.g. one Cross section in the form of a flat rectangle with rounded corners exhibit.
- Mixed cross-sectional shapes of the reinforcement within a band 10 are possible according to the invention.
- threads 16 each run in pairs by compartments formed by threads 12, 14 running perpendicular thereto.
- any weaving method can be used according to the invention be made from the metal threads or narrow strips or strips 12, 14, 16 to produce a sheet-like fabric with the desired width.
- the threads 12, 14, 16 serve as a carrier for the plastic 18.
- the surfaces of the belt 10 are horizontal from those in the figure extending threads 12, 14 formed.
- the threads 16 running in pairs can be arranged in this way the plastic 18 be embedded that an intimate connection between the threads 16 and the plastic material 18, which is the fluid impermeability of the band 10 ensures.
- the invention can Volume 10 can also be made such that even without a intimate connection between reinforcements and plastic material the fluid tightness is guaranteed, namely by a flat Tapes due to self-sealing effect.
- an interstice Fabric is made arbitrarily and especially depending selectable from the desired properties of the fabric. Prefers however, becomes flat by a weaving process from metal threads Made of metal mesh, its weave according to the respective requirements is chosen.
- the metal threads can be processed in this way or woven together be that the fabric is essentially closed metallic Has surfaces between which the filling material, in particular Plastic, is arranged.
- the proportion of the filling material or So plastic on the entire surface of the belt is very much small or negligible.
- the Metal threads 12, 14, 16 with each other according to the respective weaving process interwoven to serve as a skeleton of volume 10 to produce metallic fabrics.
- This metal mesh is then dipped in a liquid plastic bath to fill the gaps to fill in the tissue.
- the belt can 10 a final treatment e.g. by grinding the belt surfaces be subjected.
- the preferred application of the tape according to the invention is use as a sealing tape in dry areas of paper machines.
- the sheet-like fabric can be produced in such a way that that protrudes at least in one direction in the edge regions bead-like thickenings are present, which are not shown in the figure are.
- sealing beads can e.g. made by weaving the metal threads and thus also trained in the manufacture of the flat fabric become. It is also possible to put the sealing beads on the surface of the surface fabric to form plastic material.
- the sealing beads can also be from another, neither for the reinforcement still used for the filling material or a material mixture or a composite material.
- the belt according to the invention is a drying device of the paper machine, e.g. a drying cylinder with a heatable surface, together with the paper web to be dried and an or several sieves fed so that the tape, the two sealing beads of the belt and the heated surface of the drying cylinder Drying space extending over part of the circumference of the drying cylinder limit.
- the drying room is located in this drying room Paper web as well as the sieves.
- the paper web can be placed directly on the drying cylinder rest while the sieves between the paper web and the sealing tape according to the invention are arranged.
- the side sealing beads of the Belt either directly on the drying cylinder or on one on the Sieve lying on the cylinder surface.
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Woven Fabrics (AREA)
- Paper (AREA)
Abstract
Description
Die Erfindung betrifft ein Band für Maschinen zur Herstellung von Materialbahnen, insbesondere Papierbahnen.The invention relates to a belt for machines for the production of material webs, especially paper webs.
Es ist bekannt, in Papiermaschinen zum Stützen der Papierbahn Siebe aus Metallfäden oder Kunststoffäden zu verwenden. Aufgrund ihrer Durchlässigkeit können derartige Siebe nicht als Dichtbänder eingesetzt werden, die in Trockenbereichen von Papiermaschinen dazu dienen, einen an eine beheizte Fläche, z.B. die Oberfläche eines Trockenzylinders, angrenzenden Trockenraum abzudichten. Für solche Zwecke werden Bänder aus Vollmetall verwendet, deren Handhabung schwierig ist und die insbesondere aufgrund ihres hohen Gewichts und ihrer geringen Flexibilität die Bandgeschwindigkeit und somit die Arbeitsgeschwindigkeit der Papiermaschine nach oben begrenzen. Ein weiterer Nachteil von Vollmetallbändern besteht darin, daß ihre Breite aus Handhabungsgründen begrenzt ist und maximal etwa 2 m beträgt.It is known in paper machines to support the paper webs to use from metal threads or plastic threads. Because of your Such filters cannot be used as sealing tapes for permeability that are used in dry areas of paper machines, a to a heated surface, e.g. the surface of a drying cylinder, adjacent To seal the drying room. For such purposes, tapes made of solid metal, the handling of which is difficult and which in particular due to their high weight and low flexibility the Belt speed and thus the working speed of the paper machine limit up. Another disadvantage of full metal strips is that their width is limited for handling reasons and is a maximum of about 2 m.
Es ist das der Erfindung zugrundeliegende Problem (Aufgabe), ein Band der eingangs genannten Art sowie ein Verfahren zu dessen Herstellung zu schaffen, das einfach zu handhaben ist und insbesondere als Dichtband eingesetzt werden kann.It is the problem underlying the invention, a tape of the type mentioned at the beginning and a method for its production create that is easy to use and especially as a sealing tape can be used.
Die Lösung dieser Aufgabe erfolgt durch die Merkmale des Anspruchs 1 und insbesondere dadurch, daß das Band aus einem Verbundmaterial hergestellt ist, welches ein aus bevorzugt langgestreckten Festigkeitsträgern angefertigtes Flächengebilde umfaßt, in welchem Zwischenräume zwischen den Festigkeitsträgern zumindest teilweise mit einem Füllmaterial gefüllt sind.This object is achieved by the features of claim 1 and in particular in that the tape is made of a composite material is produced, which is a preferably elongated strength members manufactured fabric includes, in which spaces between the reinforcements at least partially with a filler are filled.
Aufgrund des Verbindens von Festigkeitsträgern und Füllmaterial kann - im Vergleich zu Vollmetallbändern - das Gewicht des erfindungsgemäßen Bandes reduziert werden, ohne die Stabilität und die Festigkeit des Bandes zu beeinträchtigen. Des weiteren ist das Band durch das erfindungsgemäße Verbundmaterial wesentlich flexibler. Das erfindungsgemäße Band kann prinzipiell in einer beliebigen Breite hergestellt werden, die auch mehr als 2 m betragen kann. Ein weiterer Vorteil ist, daß die Herstellungskosten niedriger liegen als bei Bändern aus Vollmetall. Die Erfindung ermöglicht es außerdem, durch Verändern des Anteils der Festigkeitsträger an der Gesamtoberfläche die Oberflächenbeschaffenheit und insbesondere die Wärmeleitfähigkeit des Bandes und somit dessen Wärmedurchgangsverhalten gezielt einzustellen. Insgesamt wird durch die Erfindung somit ein einfach handhabbares, kostengünstiges und vielseitig einsetzbares Band geschaffen.Due to the connection of strength members and filler material can - compared to full metal strips - the weight of the invention Band can be reduced without losing stability and firmness of the tape. Furthermore, the tape is due to the invention Composite material much more flexible. The invention In principle, tape can be made in any width, which can also be more than 2 m. Another advantage is that the Manufacturing costs are lower than for strips made of full metal. The The invention also makes it possible to change the proportion of the reinforcement the surface quality of the total surface and in particular the thermal conductivity of the tape and thus its Adjust heat transfer behavior in a targeted manner. Overall, the Invention thus an easy to use, inexpensive and versatile usable tape created.
Gemäß einer bevorzugten Ausführungsform der Erfindung ist das Verbundmaterial zumindest im wesentlichen fluidundurchlässig.According to a preferred embodiment of the invention, the composite material is at least essentially fluid impermeable.
Hierdurch kann das erfindungsgemäße Band als Dichtband in Trockenbereichen z.B. von Papiermaschinen eingesetzt werden. Das die Zwischenräume im Flächengebilde ausfüllende Material verhindert, daß Feuchtigkeit aus der zu trocknenden Material- bzw. Papierbahn, die durch einen Trockenraum, der von der beheizten Fläche z.B. eines Trockenzylinders und dem erfindungsgemäßen Band begrenzt wird, hindurchgeführt wird, unkontrolliert in die Umgebung entweichen kann.As a result, the tape according to the invention can be used as a sealing tape in dry areas e.g. used by paper machines. That the gaps Filling material in the fabric prevents moisture from the material or paper web to be dried, which is replaced by a Drying room, e.g. from the heated area a drying cylinder and the band according to the invention is limited, is passed through, can escape into the environment in an uncontrolled manner.
Gemäß einem weiteren bevorzugten Ausführungsbeispiel der Erfindung sind in den Randbereichen wulstartige Verdickungen vorgesehen, die bevorzugt von den Festigkeitsträgern des Flächengebildes gebildet sind.According to a further preferred embodiment of the invention bead-like thickenings are provided in the edge regions, which are preferred are formed by the reinforcement of the fabric.
Hierbei ist das erfindungsgemäße Band mit integrierten Dichtwülsten versehen, die bei der Herstellung des Flächengebildes mit ausgebildet werden können. Die Dichtwülste, die aus Metall oder Kunststoff bestehen können, dichten zusammen mit der beheizten Fläche und dem zwischen den Dichtwülsten liegenden Bereich des Bandes den vorstehend erwähnten Trokkenraum für die zu trocknende Materialbahn gegenüber der Umgebung ab. Separate Dichtungen sind erfindungsgemäß somit nicht erforderlich.Here, the band according to the invention is provided with integrated sealing beads, which are also formed in the manufacture of the fabric can. The sealing beads, which can be made of metal or plastic, seal together with the heated surface and that between the sealing beads lying area of the belt the above-mentioned drying area for the material web to be dried compared to the environment from. Separate seals are therefore not necessary according to the invention.
Gemäß einer weiteren bevorzugten Ausführungsform der Erfindung ist auf wenigstens einer Seite von den Festigkeitsträgern eine zumindest im wesentlichen geschlossene Oberfläche gebildet.According to a further preferred embodiment of the invention is on at least one side of the strength members at least essentially closed surface formed.
Durch die geschlossene Oberfläche wird ein großflächiger Kontakt des für die Festigkeitsträger verwendeten Materials mit z.B. der beheizten Fläche einer Trockeneinrichtung, beispielsweise eines Trockenzylinders, oder mit einem Kühlfluid ermöglicht. Bei Verwendung eines Materials hoher Wärmeleitfähigkeit, insbesondere von Metall, für die Festigkeitsträger wird die Wärmeleitfähigkeit des Bandes und somit der Durchgang von Wärme durch das Band maximiert. Es ist auch möglich, das Band auf beiden Seiten jeweils mit einer von den Festigkeitsträgern gebildeten, zumindest im wesentlichen geschlossenen Oberfläche zu versehen. Auf diese Weise kann bei Verwendung von Metall für die Festigkeitsträger ein Wärmedurchgangsverhalten des erfindungsgemäßen Bandes erzielt werden, welches zumindest näherungsweise demjenigen eines Vollmetallbandes entspricht.Due to the closed surface, a large-area contact of the for the reinforcement material used with e.g. the heated area a drying device, for example a drying cylinder, or with allows a cooling fluid. When using a material with high thermal conductivity, especially of metal, for the reinforcement Thermal conductivity of the belt and thus the passage of heat maximized by the tape. It is also possible to put the tape on both Sides each with one formed by the reinforcement, at least to provide a substantially closed surface. In this way can have a heat transfer behavior when using metal for the reinforcement of the tape according to the invention, which corresponds at least approximately to that of a full metal strip.
Gemäß einem weiteren bevorzugten Ausführungsbeispiel der Erfindung sind die Festigkeitsträger miteinander verwoben.According to a further preferred embodiment of the invention the reinforcements are interwoven.
Das hierbei von einem Gewebe gebildete Flächengebilde kann vergleichsweise einfach hergestellt und gezielt sowie reproduzierbar mit den jeweils gewünschten Eigenschaften versehen werden. Insbesondere kann durch Auswählen eines bestimmten Webverfahrens der Anteil der Festigkeitsträger an der Gesamtoberfläche des Bandes und somit dessen Wärmedurchgangsverhalten gezielt beeinflußt werden.The fabric formed here can be comparatively simply manufactured and targeted and reproducible with each desired properties. In particular, by Select a specific weaving process for the percentage of reinforcement on the total surface of the belt and thus its heat transfer behavior be influenced in a targeted manner.
Die Lösung der der Erfindung zugrundeliegenden Aufgabe erfolgt des weiteren durch die Merkmale des unabhängigen Verfahrensanspruchs und insbesondere dadurch, daß aus bevorzugt langgestreckten Festigkeitsträgern, insbesondere Metallfäden, ein Flächengebilde angefertigt wird und Zwischenräume zwischen den Festigkeitsträgern zumindest teilweise mit einem Füllmaterial, insbesondere mit Kunststoff, gefüllt werden.The object on which the invention is based is also achieved by the features of the independent process claim and in particular by the fact that from preferably elongated strength members, in particular metal threads, a fabric is made and Gaps between the strength members at least partially a filling material, especially with plastic.
In einer bevorzugten Ausführung des erfindungsgemäßen Verfahrens wird das Flächengebilde in flüssiges Füllmaterial getaucht.In a preferred embodiment of the method according to the invention the fabric is immersed in liquid filling material.
Das Flächengebilde wird hierbei gewissermaßen mit dem Füllmaterial getränkt, wodurch die Zwischenräume auf besonders einfache und schnelle Weise gefüllt werden und die Fluiddichtigkeit des von den Festigkeitsträgern und dem im endgültigen Zustand ausgehärteten Füllmaterial gebildeten Verbundmaterials hergestellt werden kann.The fabric is soaked with the filling material, so to speak which makes the gaps particularly easy and fast Way to be filled and the fluid tightness of the strength members and the filling material hardened in the final state Composite material can be produced.
Nach dem Eintauchen in das Füllmaterial kann überschüssiges Material, das die Oberflächen des Flächengebildes bedeckt, abgestrichen werden, um die die jeweilige Oberfläche bildenden Festigkeitsträger freizulegen. Das Flächengebilde kann dabei derart behandelt werden, daß die Festigkeitsträger und das zwischen den Festigkeitsträgern befindliche Füllmaterial zumindest näherungsweise glatte Oberflächen bilden.After immersing in the filling material, excess material, that covers the surfaces of the fabric, is smeared, to expose the reinforcement that forms the respective surface. The fabric can be treated in such a way that the reinforcement and the filling material located between the reinforcements form at least approximately smooth surfaces.
Weitere bevorzugte Ausführungsformen der Erfindung sind in den Unteransprüchen, der Beschreibung sowie der Zeichnung angegeben.Further preferred embodiments of the invention are in the subclaims, the description and the drawing.
Die Erfindung wird im folgenden beispielhaft unter Bezugnahme auf die Zeichnung beschrieben, deren einzige Figur in einer geschnittenen Seitenansicht teilweise ein Band gemäß einem Ausführungsbeispiel der Erfindung zeigt.The invention will now be described by way of example with reference to the Drawing described, the only figure in a sectional side view partially a tape according to an embodiment of the invention shows.
Das in der Figur dargestellte erfindungsgemäße Band 10 umfaßt ein flächiges
Metallgewebe aus miteinander verwobenen Metallfäden 12, 14, 16
als Festigkeitsträger, die bevorzugt aus rostfreiem Stahl oder Bronze hergestellt
sind. Grundsätzlich können erfindungsgemäß auch aus verschiedenen
Metallen bestehende Fäden zu einem Band verarbeitet werden.The
Die Querschnittsform der Festigkeitsträger kann grundsätzlich beliebig
gewählt werden, wobei der Querschnitt über die Länge der Festigkeitsträger
sowohl konstant sein als auch variieren kann. Die Festigkeitsträger
weisen z.B. einen etwa kreisförmigen Querschnitt auf, können aber auch
beispielsweise streifen- oder bandförmig ausgebildet sein und z.B. einen
Querschnitt in Form eines flachen Rechtecks mit abgerundeten Ecken
aufweisen. Auch gemischte Querschnittsformen der Festigkeitsträger innerhalb
eines Bandes 10 sind erfindungsgemäß möglich.The cross-sectional shape of the strength members can in principle be arbitrary
be chosen, the cross section over the length of the reinforcement
can be both constant and vary. The strength members
indicate e.g. an approximately circular cross-section, but can also
for example, be strip or ribbon-shaped and e.g. one
Cross section in the form of a flat rectangle with rounded corners
exhibit. Mixed cross-sectional shapes of the reinforcement within
a
In der gezeigten Ausführungsform verlaufen Fäden 16 jeweils paarweise
durch von senkrecht dazu verlaufenden Fäden 12, 14 gebildete Fächer.
Prinzipiell kann erfindungsgemäß ein beliebiges Webverfahren verwendet
werden, um aus den Metallfäden bzw. schmalen Streifen oder Bändern 12,
14, 16 ein bahnförmiges Flächengebilde mit der gewünschten Breite herzustellen.In the embodiment shown,
In den Zwischenräumen zwischen den einzelnen Fäden 12, 14, 16 befindet
sich als Füllmaterial ein Kunststoffmaterial 18, wobei die Fäden 12, 14, 16
als Träger für den Kunststoff 18 dienen. In der dargestellten Schnittebene
werden die Oberflächen des Bandes 10 von den in der Figur horizontal
verlaufenden Fäden 12, 14 gebildet. In jedem der durch die Fäden 12, 14
festgelegten Fächer können die paarweise verlaufenden Fäden 16 derart in
den Kunststoff 18 eingebettet sein, daß eine innige Verbindung zwischen
den Fäden 16 und dem Kunststoffmaterial 18 besteht, welche die Fluidundurchlässigkeit
des Bandes 10 sicherstellt. Jedoch kann das erfindungsgemäße
Band 10 auch derart hergestellt werden, daß auch ohne eine
innige Verbindung zwischen Festigkeitsträgern und Kunststoffmaterial
die Fluiddichtigkeit gewährleistet ist, und zwar durch einen bei flächigen
Bändern durch Druckeinwirkung auftretenden Selbstdichteffekt. Located in the spaces between the
Grundsätzlich ist erfindungsgemäß die Art und Weise, in der aus Festigkeitsträgern, insbesondere Metallfäden; ein Zwischenräume aufweisendes Flächengebilde hergestellt wird, beliebig und insbesondere in Abhängigkeit von den gewünschten Eigenschaften des Flächengebildes wählbar. Bevorzugt wird jedoch durch ein Webverfahren aus Metallfäden ein flächiges Metallgewebe angefertigt, dessen Webart entsprechend den jeweiligen Anforderungen gewählt wird.Basically, according to the invention, the way in which strength members, in particular metal threads; an interstice Fabric is made arbitrarily and especially depending selectable from the desired properties of the fabric. Prefers however, becomes flat by a weaving process from metal threads Made of metal mesh, its weave according to the respective requirements is chosen.
Dabei können die Metallfäden derart verarbeitet bzw. miteinander verwoben werden, daß das Flächengebilde im wesentlichen geschlossene metallische Oberflächen aufweist, zwischen denen das Füllmaterial, insbesondere Kunststoff, angeordnet ist. Der Anteil des Füllmaterials bzw. des Kunststoffs an der Gesamtoberfläche des Bandes ist hierbei also sehr klein bzw. vernachlässigbar gering.The metal threads can be processed in this way or woven together be that the fabric is essentially closed metallic Has surfaces between which the filling material, in particular Plastic, is arranged. The proportion of the filling material or So plastic on the entire surface of the belt is very much small or negligible.
Zur Herstellung des erfindungsgemäßen Bandes 10 werden zunächst die
Metallfäden 12, 14, 16 gemäß dem jeweiligen Webverfahren miteinander
verwoben, um das gewissermaßen als Skelett des Bandes 10 dienende
metallische Flächengebilde herzustellen. Dieses Metallgewebe wird anschließend
in ein Bad aus flüssigem Kunststoff getaucht, um die Zwischenräume
in dem Gewebe zu füllen.To produce the
Nach der Entnahme aus dem Tauchbad wird Kunststoffmaterial, das die
Oberflächen des nunmehr mit Kunststoff gefüllten Metallgewebes bedeckt,
entfernt, um metallisch blanke Oberflächen zu schaffen. Hierzu kann der
vorzugsweise noch flüssige Kunststoff beispielsweise durch Abstreichen
beseitigt oder in oberflächennahe Zwischenräume gestrichen werden. Dabei
können die Oberflächen geglättet werden. Auf diese Weise wird dafür
gesorgt, daß der durch das jeweilige Webverfahren bestimmte Anteil der
Metallfäden 12, 14, 16 an der Gesamtoberfläche des Bandes 10 im Anschluß
an die Kunststoffbehandlung und das Aushärten des Kunststoffes
nach wie vor gegeben ist. In einem weiteren Arbeitsschritt kann das Band
10 einer abschließenden Behandlung z.B. durch Schleifen der Bandoberflächen
unterzogen werden.After removal from the immersion bath, plastic material that the
Surfaces of the metal mesh now filled with plastic,
removed to create shiny metallic surfaces. For this, the
preferably still liquid plastic, for example by wiping
removed or painted in intermediate spaces near the surface. Here
the surfaces can be smoothed. This way it will be for that
ensured that the proportion of the
Wenngleich die vorstehend erläuterte Anwendung eines Kunststoff-Tauchbades die bevorzugte Vorgehensweise darstellt, bestünde eine alternative Möglichkeit zum Einbringen von Kunststoff in die Zwischenräume darin, das Metallgewebe mit flüssigem Kunststoff zu besprühen und - falls gewünscht - anschließend den die Oberflächen bedeckenden Kunststoff zu entfernen, um die Metallfäden freizulegen.Although the above-described application of a plastic immersion bath the preferred approach would be an alternative Possibility to insert plastic into the spaces in between, spray the metal mesh with liquid plastic and - if desired - then the plastic covering the surfaces Remove to expose the metal threads.
Die bevorzugte Anwendung des erfindungsgemäßen Bandes besteht in dem Einsatz als Dichtband in Trockenbereichen von Papiermaschinen. Hierzu kann das bahnförmige Flächengebilde derart hergestellt werden, daß in den Randbereichen zumindest in eine Richtung abstehende wulstartige Verdickungen vorhanden sind, die in der Figur nicht dargestellt sind.The preferred application of the tape according to the invention is use as a sealing tape in dry areas of paper machines. For this purpose, the sheet-like fabric can be produced in such a way that that protrudes at least in one direction in the edge regions bead-like thickenings are present, which are not shown in the figure are.
Diese Dichtwülste können z.B. durch Verweben der Metallfäden hergestellt und somit bei der Anfertigung des Flächengewebes mit ausgebildet werden. Es ist auch möglich, die Dichtwülste durch auf der Oberfläche des Flächengewebes aufliegendes Kunststoffmaterial zu bilden. Die Dichtwülste können auch aus einem weiteren, weder für die Festigkeitsträger noch für das Füllmaterial verwendeten Material oder einer Materialmischung bzw. einem Materialverbund bestehen. These sealing beads can e.g. made by weaving the metal threads and thus also trained in the manufacture of the flat fabric become. It is also possible to put the sealing beads on the surface of the surface fabric to form plastic material. The sealing beads can also be from another, neither for the reinforcement still used for the filling material or a material mixture or a composite material.
Das erfindungsgemäße Band wird einer Trockeneinrichtung der Papiermaschine, z.B. einem eine beheizbare Oberfläche aufweisenden Trockenzylinder, zusammen mit der zu trocknenden Papierbahn und einem oder mehreren Sieben derart zugeführt, daß das Band, die beiden Dichtwülste des Bandes und die beheizte Oberfläche des Trockenzylinders einen sich über einen Teil des Umfangs des Trockenzylinders erstreckenden Trockenraum begrenzen. In diesem Trockenraum befinden sich die zu trocknende Papierbahn sowie die Siebe. Die Papierbahn kann direkt auf dem Trockenzylinder aufliegen, während die Siebe zwischen der Papierbahn und dem erfindungsgemäßen Dichtband angeordnet sind. In Abhängigkeit von den Breiten des Bandes und der Siebe liegen die seitlichen Dichtwülste des Bandes entweder direkt auf dem Trockenzylinder oder auf einem auf der Zylinderoberfläche liegenden Sieb auf.The belt according to the invention is a drying device of the paper machine, e.g. a drying cylinder with a heatable surface, together with the paper web to be dried and an or several sieves fed so that the tape, the two sealing beads of the belt and the heated surface of the drying cylinder Drying space extending over part of the circumference of the drying cylinder limit. The drying room is located in this drying room Paper web as well as the sieves. The paper web can be placed directly on the drying cylinder rest while the sieves between the paper web and the sealing tape according to the invention are arranged. Depending on the Widths of the band and the sieves are the side sealing beads of the Belt either directly on the drying cylinder or on one on the Sieve lying on the cylinder surface.
Wegen der Fluidundurchlässigkeit des erfindungsgemäßen Verbundmaterials kann aus der Papierbahn verdampfende Feuchtigkeit nicht aus dem durch das Band abgedichteten Trockenraum entweichen. Die gute Wärmeleitfähigkeit des Bandes gewährleistet einen raschen Wärmeabtransport, so daß die Feuchtigkeit an dem Sieb kondensiert und von diesem aus dem Trockenbereich herausgetragen wird. Because of the fluid impermeability of the composite material according to the invention moisture from the paper web cannot evaporate from the escape the drying room sealed by the tape. The good thermal conductivity the belt ensures rapid heat dissipation, so that moisture condenses on and from the screen is carried out of the dry area.
- 1010th
- Bandtape
- 12, 1412, 14
- MetallfädenMetal threads
- 1616
- MetallfädenMetal threads
- 1818th
- KunststoffmaterialPlastic material
Claims (18)
dadurch gekennzeichnet,
daß die Festigkeitsträger (12, 14, 16) aus einem Material hoher Wärmeleitfähigkeit, insbesondere aus Metall, bevorzugt aus rostfreiem Stahl und/oder Bronze, hergestellt sind.Band according to claim 1,
characterized by
that the strength members (12, 14, 16) are made from a material with high thermal conductivity, in particular from metal, preferably from stainless steel and / or bronze.
dadurch gekennzeichnet,
daß die Festigkeitsträger in Form von Fäden, insbesondere Metallfäden (12, 14, 16), vorgesehen sind.Band according to claim 1 or 2,
characterized by
that the strength members in the form of threads, in particular metal threads (12, 14, 16), are provided.
dadurch gekennzeichnet,
daß die Festigkeitsträger (12, 14, 16) einen zumindest näherungsweise kreisförmigen Querschnitt aufweisen und/oder in Form von insbesondere schmalen Streifen und/oder Bändern vorgesehen sind. Band according to at least one of the preceding claims,
characterized by
that the strength members (12, 14, 16) have an at least approximately circular cross section and / or are provided in the form of, in particular, narrow strips and / or bands.
dadurch gekennzeichnet,
daß zumindest einige der Festigkeitsträger jeweils eine über ihre Länge variierende Querschnittsform aufweisen.Band according to at least one of the preceding claims,
characterized by
that at least some of the strength members each have a cross-sectional shape that varies over their length.
dadurch gekennzeichnet,
daß als Füllmaterial (18) Kunststoff vorgesehen ist.Band according to at least one of the preceding claims,
characterized by
that plastic is provided as filler (18).
dadurch gekennzeichnet,
daß das Verbundmaterial zumindest im wesentlichen fluidundurchlässig ist.Band according to at least one of the preceding claims,
characterized by
that the composite material is at least substantially fluid impermeable.
dadurch gekennzeichnet,
daß in den Randbereichen insbesondere wulstartige Verdickungen vorgesehen sind, die von den Festigkeitsträgern (12, 14, 16) des Flächengebildes, dem Füllmaterial (18) und/oder zumindest einem weiteren Material oder wenigstens einer Materialmischung gebildet sind.Band according to at least one of the preceding claims,
characterized by
that, in particular, bead-like thickenings are provided in the edge regions, which are formed by the strength members (12, 14, 16) of the flat structure, the filler material (18) and / or at least one further material or at least one material mixture.
dadurch gekennzeichnet,
daß auf wenigstens einer Seite von den Festigkeitsträgern (12, 14, 16) eine zumindest im wesentlichen geschlossene Oberfläche gebildet ist. Band according to at least one of the preceding claims,
characterized by
that an at least substantially closed surface is formed on at least one side by the strength members (12, 14, 16).
dadurch gekennzeichnet,
daß auf wenigstens einer Seite die Festigkeitsträger (12, 14, 16) und das Füllmaterial (18) eine zumindest näherungweise glatte Oberfläche bilden.Band according to at least one of the preceding claims,
characterized by
that on at least one side the strength members (12, 14, 16) and the filler material (18) form an at least approximately smooth surface.
dadurch gekennzeichnet,
daß das Flächengebilde als Sieb ausgebildet ist.Band according to at least one of the preceding claims,
characterized by
that the fabric is designed as a sieve.
dadurch gekennzeichnet,
daß die Festigkeitsträger (12, 14, 16) miteinander verwoben sind.Band according to at least one of the preceding claims,
characterized by
that the strength members (12, 14, 16) are woven together.
dadurch gekennzeichnet,
daß das Flächengebilde in flüssiges Füllmaterial (18) getaucht wird. A method according to claim 13,
characterized by
that the fabric is immersed in liquid filler material (18).
dadurch gekennzeichnet,
daß das Flächengebilde mit flüssigem Füllmaterial (18) besprüht wird.The method of claim 13 or 14,
characterized by
that the fabric is sprayed with liquid filling material (18).
dadurch gekennzeichnet,
daß nach der Behandlung mit insbesondere flüssigem Füllmaterial (18) die Oberflächen des Flächengebildes geglättet werden und/oder das Flächengebilde einer abschließenden Oberflächenbehandlung insbesondere durch Schleifen der Oberflächen unterzogen wird.Method according to at least one of claims 13 to 15,
characterized by
that after the treatment with in particular liquid filling material (18), the surfaces of the fabric are smoothed and / or the fabric is subjected to a final surface treatment, in particular by grinding the surfaces.
dadurch gekennzeichnet,
daß die Oberflächen des Flächengebildes bedeckendes Füllmaterial (18) entfernt, insbesondere abgestrichen, und/oder in die Zwischenräume gestrichen wird.Method according to at least one of claims 13 to 16,
characterized by
that the filling material (18) covering the surfaces of the fabric is removed, in particular wiped off, and / or is wiped into the spaces.
dadurch gekennzeichnet,
daß die Festigkeitsträger (12, 14, 16) miteinander verwoben werden, wobei bevorzugt das Webverfahren jeweils in Abhängigkeit von der gewünschten Oberflächenbeschaffenheit, insbesondere von dem gewünschten Wärmedurchgangsverhalten, gewählt wird.Method according to at least one of claims 13 to 17,
characterized by
that the strength members (12, 14, 16) are interwoven with one another, the weaving method preferably being selected in each case as a function of the desired surface quality, in particular of the desired heat transfer behavior.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19900989 | 1999-01-13 | ||
| DE19900989A DE19900989A1 (en) | 1999-01-13 | 1999-01-13 | Belt for machines for the production of material webs |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP1026313A2 true EP1026313A2 (en) | 2000-08-09 |
| EP1026313A3 EP1026313A3 (en) | 2001-05-09 |
| EP1026313B1 EP1026313B1 (en) | 2005-04-13 |
Family
ID=7894112
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP99123453A Expired - Lifetime EP1026313B1 (en) | 1999-01-13 | 1999-11-25 | Band for making a web material |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US7005045B1 (en) |
| EP (1) | EP1026313B1 (en) |
| DE (2) | DE19900989A1 (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10204356C1 (en) * | 2002-02-01 | 2003-08-07 | Heimbach Gmbh Thomas Josef | Press felt for papermaking machine has a comprising layers of parallel fibers with spacer fibers between them which are soluble in solvent which does not dissolve parallel fibers |
| EP1333120B1 (en) | 2002-02-01 | 2004-10-27 | Thomas Josef Heimbach GmbH & Co. | Papermaker's fabric, in particular press felt |
| DE10204357B4 (en) * | 2002-02-01 | 2006-10-26 | Thomas Josef Heimbach Gmbh & Co. | press felt |
| JP2007519834A (en) * | 2004-01-30 | 2007-07-19 | ボイス ペ−パ− パテント ゲ−エムベ−ハ− | State-of-the-art dehydration system |
| DE102005035030A1 (en) * | 2005-07-27 | 2007-02-01 | Bhs Corrugated Maschinen- Und Anlagenbau Gmbh | Lined corrugated paperboard producing machine, has two anvil rollers, glue application unit and pressing unit whereby wrap threads and weft threads, at their intersection, are connected with one another by means of synthetic material |
| DE102006022235A1 (en) * | 2006-05-12 | 2007-11-15 | Voith Patent Gmbh | Papermakers dryer |
| DE102008043919A1 (en) | 2008-11-20 | 2010-05-27 | Voith Patent Gmbh | Belt for use as clothing in drying- or smoothing arrangement of e.g. paper machine, has contact surfaces, where regions between individual surfaces are filled with filling material under formation of predefined surface characteristics |
| DE102009045213A1 (en) | 2009-09-30 | 2011-03-31 | Voith Patent Gmbh | Band i.e. sealing band, for use in drying or smoothing arrangement for e.g. paper machine, has support elements forming part of surfaces and consisting of material having high heat conductivity, where band is impermeable to fluid |
| DE102011080666A1 (en) | 2011-08-09 | 2013-02-14 | Voith Patent Gmbh | Band for drying arrangement to produce or process material webs, particularly fiber material webs, such as tissue, paper or cardboard sheets, has composite material with fabric surfaces of elongated metal reinforcing elements |
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- 1999-11-25 EP EP99123453A patent/EP1026313B1/en not_active Expired - Lifetime
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| US3067779A (en) * | 1960-02-04 | 1962-12-11 | Draper Brothers Company | Electroconductive papermaker's felt |
| US3523867A (en) * | 1966-01-28 | 1970-08-11 | Johnson Wire Works Ltd | Fourdrinier wire belt |
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Also Published As
| Publication number | Publication date |
|---|---|
| DE19900989A1 (en) | 2000-07-27 |
| US7005045B1 (en) | 2006-02-28 |
| EP1026313A3 (en) | 2001-05-09 |
| DE59911904D1 (en) | 2005-05-19 |
| EP1026313B1 (en) | 2005-04-13 |
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